On Wed, Jan 31, 2018 at 10:48 AM, Peter Maydell <peter.mayd...@linaro.org> wrote: > On 31 January 2018 at 18:17, Alistair Francis <alistai...@gmail.com> wrote: >> On Wed, Jan 31, 2018 at 9:13 AM, Paolo Bonzini <pbonz...@redhat.com> wrote: >>> cpu->halted = false likewise should not be needed here, but you cannot >>> just clear CPU_INTERRUPT_HALT either. You need to set a *different* >>> interrupt request bit (the dummy CPU_INTERRUPT_EXITTB will do) and >>> cpu_handle_halt will clear cpu->halted. >> >> The problem with that is that I hit this assert for ARM CPUs: >> >> qemu-system-aarch64: ./target/arm/cpu.h:1446: arm_el_is_aa64: >> Assertion `el >= 1 && el <= 3' failed. > > Backtrace from when you hit that might be useful...
Here it is: (gdb) bt #0 0x00007ffff1a030bb in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 #1 0x00007ffff1a04f5d in __GI_abort () at abort.c:90 #2 0x00007ffff19faf17 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x555555cf86c4 "el >= 1 && el <= 3", file=file@entry=0x555555cf8660 "/scratch/alistai/master-qemu/target/arm/cpu.h", line=line@entry=1446, function=function@entry=0x555555d314e8 <__PRETTY_FUNCTION__.24916> "arm_el_is_aa64") at assert.c:92 #3 0x00007ffff19fafc2 in __GI___assert_fail (assertion=assertion@entry=0x555555cf86c4 "el >= 1 && el <= 3", file=file@entry=0x555555cf8660 "/scratch/alistai/master-qemu/target/arm/cpu.h", line=line@entry=1446, function=function@entry=0x555555d314e8 <__PRETTY_FUNCTION__.24916> "arm_el_is_aa64") at assert.c:101 #4 0x00005555557eb872 in arm_el_is_aa64 (el=0, env=0x55555723c7f8) at /scratch/alistai/master-qemu/target/arm/cpu.h:1446 #5 0x0000555555951233 in arm_el_is_aa64 (el=0, env=0x55555723c7f8) at /scratch/alistai/master-qemu/target/arm/cpu.h:1838 #6 0x0000555555951233 in arm_cpu_do_interrupt (cs=0x555557234550) at /scratch/alistai/master-qemu/target/arm/helper.c:8020 #7 0x000055555585e75b in cpu_handle_exception (ret=<synthetic pointer>, cpu=0x555556c64200) at /scratch/alistai/master-qemu/accel/tcg/cpu-exec.c:532 #8 0x000055555585e75b in cpu_exec (cpu=cpu@entry=0x555557234550) at /scratch/alistai/master-qemu/accel/tcg/cpu-exec.c:748 #9 0x000055555582d963 in tcg_cpu_exec (cpu=0x555557234550) at /scratch/alistai/master-qemu/cpus.c:1297 #10 0x000055555582d963 in qemu_tcg_cpu_thread_fn (arg=0x555557234550) at /scratch/alistai/master-qemu/cpus.c:1502 #11 0x00007ffff1db37fc in start_thread (arg=0x7ffef6b43700) at pthread_create.c:465 #12 0x00007ffff1ae0b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Alistair > > thanks > -- PMM